Sea Surface Temperature Intercomparison in the Framework of the Copernicus Climate Change Service (C3S)
Sea Surface Temperature Intercomparison in the Framework of the Copernicus Climate Change Service (C3S)
复制标题
哥白尼气候变化服务（C3S）框架下的海面温度比对
DOI：
10.1175/jcli-d-20-0793.1
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发表时间：
2021
影响因子：
4.9
通讯作者：
Yang C
中科院分区：
文献类型：
--
作者：
Yang C
哥白尼气候变化服务中心（C3 S）和高分辨率海表温度小组（GHRSST）共同努力，致力于对八种全球无间隙海表温度（SST）产品进行相互比较研究，以评估其对与气候分析相关的SST的准确代表性。总的来说，所有SST产品在重叠的时间段（2003-18）显示出一致的空间格局和时间变化。每种产品之间的主要差异位于西部边界流和南极绕极流区域。线性趋势显示所有产品的SST空间模式一致，并显示出2012年至2018年的强烈变暖趋势，太平洋盆地是主要贡献者。与显著的变暖趋势相比，所有SST产品之间的SST差异非常小。空间功率谱密度表明，插值到1°空间分辨率对我们的结果的影响可以忽略不计。全球平均SST时间序列在卫星时代早期（1982-2002年）观测资料较少时，各SST产品间的差异较大，说明观测频率是SST气候学的主要制约因素。成熟度矩阵分数表示每种产品在文件编制、储存和传播方面的成熟度，但不表示其科学质量，表明ESA CCI和OSTIA SST都有很好的文件记录，方便用户使用。可以对MGDSST和BoM SST进行改进。最后，我们建议这些SST产品可用于基础气候应用和气候研究（例如，厄尔尼诺现象）。
A joint effort between the Copernicus Climate Change Service (C3S) and the Group for High Resolution Sea Surface Temperature (GHRSST) has been dedicated to an intercomparison study of eight global gap-free sea surface temperature (SST) products to assess their accurate representation of the SST relevant to climate analysis. In general, all SST products show consistent spatial patterns and temporal variability during the overlapping time period (2003–18). The main differences between each product are located in the western boundary current and Antarctic Circumpolar Current regions. Linear trends display consistent SST spatial patterns among all products and exhibit a strong warming trend from 2012 to 2018 with the Pacific Ocean basin as the main contributor. The SST discrepancy between all SST products is very small compared to the significant warming trend. Spatial power spectral density shows that the interpolation into 1° spatial resolution has negligible impacts on our results. The global mean SST time series reveals larger differences among all SST products during the early period of the satellite era (1982–2002) when there were fewer observations, indicating that the observation frequency is the main constraint of the SST climatology. The maturity matrix scores, which present the maturity of each product in terms of documentation, storage, and dissemination but not the scientific quality, demonstrate that ESA-CCI and OSTIA SST are well documented for users’ convenience. Improvements could be made for MGDSST and BoM SST. Finally, we have recommended that these SST products can be used for fundamental climate applications and climate studies (e.g., El Niño).